Spline-drive sprocketMaterial: 6061-T6 aluminumSize: 23t, 25t, 26t, 28tTeeth: 1/8" Bore: 24mm 48 splinedThickness: 8mmExtra info: heat treated 48 spline crmo insert, runs directly on 24mm spindle, hollow cnc spokes for reduced weightWeight (kg): 0.079 (23t)Color: black, gold, high polished